21101012101102 has 8 divisors (see below), whose sum is σ = 31651538518296. Its totient is φ = 10550499261672.

The previous prime is 21101012101063. The next prime is 21101012101157. The reversal of 21101012101102 is 20110121010112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21101012101102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2627268 + ... + 7007464.

It is an arithmetic number, because the mean of its divisors is an integer number (3956442314787).

Almost surely, 2^{21101012101102} is an apocalyptic number.

21101012101102 is a deficient number, since it is larger than the sum of its proper divisors (10550526417194).

21101012101102 is a wasteful number, since it uses less digits than its factorization.

21101012101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788882.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21101012101102 its reverse (20110121010112), we get a palindrome (41211133111214).

The spelling of 21101012101102 in words is "twenty-one trillion, one hundred one billion, twelve million, one hundred one thousand, one hundred two".